Dongkui Waxberry and nutrient element Zinc

Although zinc is a trace element in plants, if Dongkui red bayberry is deficient in zinc, it will affect its growth. Because zinc has many effects on Dongkui bayberry, such as: first, the role of zinc (1) zinc is related to auxin synthesis in trees. That is to say, when Dongkui bayberry needs to synthesize auxin, it can not lack zinc. (2) although zinc is not directly involved in photosynthesis, it affects photosynthesis and the formation of chlorophyll. (3) Zinc is found in more than 80 enzymes in the tree. (4) it affects the three-dimensional structure of deoxyribonucleic acid (RNA) of genetic components, which also affects the synthesis of proteins. (5) Zinc is related to cell division. (6) proper amount of zinc can improve the stress resistance of the tree. (7) Zinc can regulate the balance, absorption and utilization of phosphorus in trees. Second, the performance of zinc deficiency Dongkui bayberry after zinc deficiency, the tree is short, the new shoots are clustered, the internodes are short, the branches are thin and the leaves are small. These symptoms are similar to those of boron deficiency. However, unlike boron deficiency, the terminal buds of the branches do not die, the leaves are small and deformed, the veins are green or yellowing, and the leaves have irregular spots. The leaves of the new shoots gradually fall off from the base, leaving only a few leaflets at the top, or even the whole branch leaves are bare, forming a bald branch. Third, the reasons for zinc deficiency (1) the soil is too sandy, the soil is barren, and the water conservation and fertility conservation are poor. (2) the soil organic matter is too little and the PH value is high. (3) there is too much phosphorus, which makes the proportion of phosphorus and zinc in the tree out of proportion and reduces the activity of zinc. (4) the Dongkui bayberry trees planted on the south slope are prone to zinc deficiency due to strong sunlight. Fourth, the method of correction (1) the garden should avoid using a large amount of lime and not applying phosphate fertilizer. (2) according to the situation of zinc deficiency in trees, zinc sulfate can be applied at the rate of 1kg / mu. (3) using 0.3% 0.5% zinc sulfate solution, spraying more than 3 times every 10 to 15 days, zinc can be quickly replenished.